Mining machine



Sept. 6, 1932. M. P. HOLMES 1,375,334

MINING MACHINE Filed Feb. 7, 1929 2 Sheets-Sheet z ZZZ R0 22 far) 44 41 WarnJH/Yo Zrned'.

Patented Sept. 6, 1932 uuireo STATES PATENT OFFICE MORRZS P. HOLMES, OF CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MA- CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS I MINING MACHINE Application filed February 7, 1929. Serial N0.-338,287.

. This invention relates to mining machines connected theretois an elongated horizontal and more particularly, but notexclusively, to plane cutter bar 3 having thereon for circucoal mining machines of the flexibly fed, conlation orbitally about its margin an endless ti g g tt type A cutter bit carrying cutter chain 4. Mounted 5 An object of this invention is to provide on the opposite sides of the rearward end of 55 an improved mining machine. Another 010- the machine frame on transversely extending ject is to provide an improved coal mining horizontal axes are coaxially arranged relamachine of the flexibly fed, continuous cuttively rotatable feeding and controlling memter' type having improved means for feeding bers herein in the form of haulage drums 5 lo and controlling movement of the machine and 6 with which'flexible' feeding means in 60 during the cutting operation and for moving the form of haulage cables 7 and 8 respectivethe machine about the mine. A further obly cooperate. Mounted on the opposite sides ject is to provide an improved coal mining of the forward end of the machine frame are machine of the flexibly fed, continuous cutguide sheaves 9 while mountedon the oppo- '15 ter, room and pillar type having improved site rear corners of the machine frame are 65 flexible feeding means whereby the machine similar guide sheaves 10, these guide sheaves may be fed in a more flexible and advanbeing adapted to guide the haulage cables 7 tageous manner. Still another object is to and 8 during the various operations of the provice an improved coal mining machine of machine. Arranged within the forward end the flexibly fed, continuous cutter, room and of the machine frame is a motor 11 adapted 70 pillar type having improved flexible feeding to effect drive, through improved transmis means of the multiple haulage drum type sion mechanism to be later described, of the and improved plural speed reversible driving haulage drums and cutter cha n. I connections for the haulage drums. These The mechanism for actuating the cutter and other objects and advantages of this in{ chain 4 will now be described. It will be 75 vention will, however, hereinafter more fully noted that the motor 11 is herein preferably appear. r of the usual electric reversible type having In the accompanying drawings there is its armature shaft 12 horizontally disposed shown for purposes of illustration one form andextending longitudinally of the machine. 3b which the invention may assume in practice. Fixed to the rear end of the armature shaft so In these drawings, 1 r 12 and rotatable therewith is a vbevelpinion 1 is a topplan view, partially broken 13 meshing with a horizontal bevel gear 14: away in horizontal section toillustrate desuitably fixed to a vertical shaft 15 suitably tails of construction, of the improved minjournaled within the frame of the machine. innmachine. As-shown in Fig.2, formed integral with the 8 Fig. 2 is an enlarged central longitudinal vertical shaft 15 is a spur pinion 16 meshvertical sectional view taken substantially on ing with a large spur gear 17 having its hub line 2-2 Fig. 1. portion journaled on the upstanding sleeve a transverse vertical. sectional view portion'of a member 18. The member 18 taken substantially on line-33 of Fig. 2. is keyed to a vertical. shaft 19 journaled J a a detail sectionalview taken on within bearing sleeves 20 and 21 suitably line l--iof Fig. 3. carried wlthin the. machine frame. As is In this illustrative form of the invention usual in machines of thetype disclosed, the ther isehown a coal mining machineof the spur gear 17 is connectible, by a clutch mechfie Yiblyfed, continuous cutter type and genanism 22.0f the usual pin type, to a cutter erall u comprising a machine frame 1 having chain driving sprocket 23. The clutch mecha plane bot"om surface 2 on wh ch the maanism 22 has operating means of any suitchine is ably supported for movement able form and as the detailed construction over the mine lioorf Proiecting forwardly of this clutch and the controlling means" A lengtl'iwise of the machine frame and rigidly therefor does not enter into this invention 1'00 further description of the same is herein thought to be unnecessary. Asillustrated, the cutter chain drive sprocket 23 is journaled on a bearing sleeve 24 supported by the member 18 and an underlying flanged member 25, the members 17 and 25 being secured to the hub of the gear 17 by bolts 26. Interposed between the members 25 and 17 and engaging the lower port-ion of the machine frame is a ball thrust bearing 27. The cutter chain drivesprocket 23 engages and drives the cutter chain 4 in a usual manner, the cutter chain drive sprocket being connectible to and disconnectible from the motor at will. It will also be noted that meshing with the spur gear 1.7 is a spur truck driving gear 28 journaled on avertical stud 2 9 supported on an overlying flange portion 30 ofthe machine frame. The truck driving gear 28 is adapted to engage the usual driving element on the transport truck for the machine to effect propulsion of the truck about the mine by power from the driving motor 11 of the machine thereon.

Journaled on a bearing sleeve supported by the upper end of the vertical shaft 19 is a spur pinion 36 adapted to be driven by shaft 19 through a reversible friction device generally designated 37 hereinafter described in detail. Rotatable on parallel vertical axes disposed in the same transverse vertical plane at opposite sides of the machine and meshing with the opposite sides of the spur pinion 36 are spur gears 38 and 39. The gears 38, 39 are respectively secured at 40 and 41 to the lower ends of vertical shafts 42 and 43. The shafts 42, 43 are each ournaled at their ends in ball bearings 44 suitably carried by the machine frame. Referring to the fast speed driving connections for the haulage drums it will be observed that secured to the vertical shaft 42 1s a fast speed worm 45 meshing with a worm wheel 46 journaled on ball bearings 47 supported on a transversely extending horizontal main drive shaft 48 herein arranged parallel with the drum axes. The transverse drive shaft 48 is journaled at its opposite ends in ball bearings 49 suitably supported on the side walls of the machine frame. Carried by a laterally projecting sleeve portion 50 on the worm wheel 46is aseries of clutch discs 51 interleaved witi a corresponding series of clutch discs 52 carried by a clutch member 53 keyed to tie shaft 48. Keyed at 54 to the opposite ends of the shaft 48 are slidable clutch pinions 55 and 56 respectively adapted to mesh with spur gears 57 and 58-. The gears 57 and 58 are respectively keyed at 59 to horizontal transverselyextending shafts 60 arranged parallel with the shaft 48 and journaled in ball bearings 61 slidably supported within the frame of the machine. Secured to the outer ends of each of the shafts 60 is a spur pinion 62, these pinions meshing respectively with internal gears 63 and 64 formed on the haulage drums 5 and 6 respectively. As shown in Fig. 1 the haulage drums 5 and 6 are each journaled on laterally projecting studs 65 mounted on the sides of the machine frame and held in position on the studs by suitable screw and washer connections 66. It will thus be seen that when the fast speed controlling clutch 51, 52 is applied the haulage drums 5 and 6 are adapted to be driven series of clutch discs 71 which are interleaved with a corresponding series of clutch discs 72 carried by a clutch member 73 keyed to the shaft 48. The teeth on the worm 45 are of steeper inclination than the teeth on the worm 67 and these worms rotate in the same direction to efiect drive of the worm wheels in the same direction. It will thus be seen that when the clutch 71, 72 is applied the haulage drums 5 and 6 are adapted to be driven at a relatively slow speed and in 0pposite directions at suchspeed-under the control of the reversible friction device 37. It will also be evident that the spur pinions 55, 56 may be slid inwardly from the position shown in Fig. 1 thereby disconnecting the drive of the transmission shaft 48 from the haulage drums, thereby permitting free rotation of the latter. The mechanisms for shifting the spur pinions 5 5, 56 each comprises a pivoted shipper yoke 74 secured to an operating shaft 75, these shafts carrying respectively at their outer ends operating levers 76, 77. The operating mechanism for the fast and slow speed friction clutches comprises slidable clutch applying members 78, 79 surrounding and mounted on the shaft 48 and interposed between these members is a pivoted shipper member 80 secured to an operating shaft 81. The shaft 81 carries at its outer end an operating lever 82.

The improved reversible friction device 37 above referred to herein comprises a sleeve 83 keyed at 84 to the upper end of the vertical shaft 19 (see Figs. 3 and 4). The sleeve 83 carries a series of friction clutch discs 85 which are interleaveo with a series-of clutch discs 86 carried by a bevel gear. 87 herein formed integral with the hub of the spur pinion 36. Meshing with the bevel gear 87 is a plurality of bevel pinions 88, herein three, rotatably mounted on radial studs 89 carried by the clutch housing 90. It will be noted that the housing is provided with a laterally projecting lug 91 engaging stops 92 on the frame of the machine. The bevel pinions 88 mesh with a bevel gear 93 rotatably mounted on the clutch housing 90 and carrying a series of friction clutch discs 94 interleaved with clutch discs 95 carried by a slidable clutch applying member or sleeve 96. The clutch applying member 96 has a radial flange 97 projecting etween and engageable with the end discs ofthe friction clutches. As shown in Fig. 3, the clutch member 96 is slidably mounted on a sleeve or'bushing 98 threadedly connected at 99 to the upper end of the vertical shaft 19, the member 96. having arms 100 which slide in longitudinal grooves 101 in thesleeve 83 thereby'forming an interlocking connection between thev parts. Downward movement ofthe clutch-applying member, 96 renders operative the clutch 85, 86 to connect the sleeve 83 with the gear 87, while upward movement of said clutch applying member 96 disengages the clutch: 85, 86 and renders operative the clutch 9 1, 95 to connect the sleeve 83 with the bevel gear 93. When the gear 93 is clutched to the sleeve83it will be seen that the pinion 36 will be rotated from the vertical shaft 19 through the bevel gear 93, pinions 88, and'bevel gear 87 and in a directionopposite from the direction of rotation of said shaft. When the pinion 36 is directly connected to' the sleeve 83 by the clutch 85, 86 it will be seen that this pinion will be rotated by the shaft 19 and in the same direction.

For operating the clutch applying member 96 there is provided a sleeve 102 slidably mounted on the exterior of the upper sleeve portion 103 of the clutch applying member 96, sai d sleeves 102 and 103 having respectively internal and external shoulders 104 and 105. The outer. end of the sleeve 102 is interiorly threaded to receivea bushing 106 and a nut 107 is threaded on the exteriorly threaded outer end of the sleeve 103. Engaging the bushing 106 and the nut 107 is a washer 108, while engaging the shoulders 104, is a similar washer 109 and between said washers 108, 109 is interposed a coil spring 110. As will now be seen downward movement of the sleeve 102 will cause, through the bushing 106 and washer 108. compression of spring 110, which will be communicated through the washer 109 and shoulder 10 1 to theclutch applying member 96, causing downward movement of said member and thereby ren dering operative the clutch 85. 86 to connect the sleeve 83 to the spur pinion 36. Similar ly, upward movement of the sleeve 102 act ng through the shoulder 10a and washer 109, will compress the spring 110, the tension of which will be transmitted through the washer 108 and the nut 107 to the clutch applying member 96, causing upward movement of said member thereby rendering operative the clutch 94, 95 to connect the sleeve 83 and bevel gear 93. It will be seen that movement of the sleeve 102 in either direction isyieldingly transmitted to the clutch applying member 96 through the spring 110. For moving the The ring 111 is provided with trunnions 114 which are engaged by the forked end of a lever 115 pivotally mounted on a transverse shaft 116 suitably supported by the machine frame. The lever 115 has an upstanding lever portion or arm 117 suitably connected at 118 to a reciprocable operating rod 119. The outer end of the rod 119 is threaded at 120 and is engaged by a nut 121 rotatably mounted on the machine frame and having an operating handle 122. By moving the lever 115 in one direction or the other it will be seen that, through the connections described,tl1e pinion 36 may be connected with the shaft 19 for rotation in either direction, causing, through the transmission connections described, a rotation of the haulage drums 5 and 6 in either direction. It will thus be seen that upon application of one or theother of the speed controlling clutches and upon suitable application of the reverse frictions the haulage drums 5 and 6 may be rotated at a fast or a slow speed in one direction and at a fast or slow speed in the opposite direction without reversing the motor. 7

The operation of the improved mining machine is as follows. The mining machine is transported about the mine while supported on its transport truck which ,is driven by the motor 11 of the machine through bevel gearing '13, 14, and spur gearing 16, 17, and 28, the latter gear engaging the usual truck driving element on the truclr. It will be evident that upon reversal of the motor 11 the transport truck may be propelled along the mine trackway in an opposite direction. Vhen the working face is reached the mining machine is unload-ed from the truck in a well known manner and one or the other of the haulage cables 7, 8 is. connected to an anchor or roof jack disposed adjacent the coal face at the right hand rib of the room. The fast speed friction 51, 52 is then applied connecting the worm wheel 16 to the shaft-48 and as a result the haulage cable is wound in by the fast speed worm gearing at a relatively fast speed and the machine is slid over the mine bottom to a position adjacent the right hand corner of the room. The slow speed clutch 70, 71 is then applied and the haulage cable is wound in at a relatively slow speed thereby sumping the cutter bar beneath the coal face. The advance haulage cable 7 is then connected at its free end to an anchor or roof jack adjacent the coal face at the left hand rib while the receding haulage cable 8 is at its free end connected to a roof jack adjacent the right hand rib. Under suitable control of the several controlling clutches the machine is straightened up and fed transversely across the face at a cutting speed, the haulage drum 5 winding in the haulage cable 7 at a slow cutting speed while the haulage drum 6 pays out the receding haulage cable 8. If it is desired to angle the machine during the transverse cutting operation it is obvious that the haulagecable 8 may be woimd in by the drum 6 at a fast speed to swing the rear end of the machine rearwardly and upon suitable control of the haulage drums 5 and 6 the machine may be angled in either direction as desired. When the transverse cut is completed the machine is angled in the usual manner and the free end of the haulage cable 7 is connected to a roof jack located in the rear of the machine and the cutter bar with drawn from the face at a cutting speed. The mining machine is then hauled over the mine bottom at a fast speed and again loaded on the transport truck and moved to another working place. It is also evident that dur ing the cutting operation the haulage drums may be rotated to unwind or windin their respective haulage cable at a fast or a slow speed and in either direction at each speed under the control of the reversible friction device 37 and that the drums may be disconnected from the drive to permit free rotation of the drums under the control of the slidable clutch pinions and 56. It will further be noted that when the motor 11 is reversed, the cutter bits turned in their respective links, and the haulage cables extended in an opposite direction the machine may be fed across the coal face from left to right. @ther operations of the improved minin machine will be clearly apparent to those skilled in the art. 7

As a result of this invention it will be noted that an improved coal mining machine of the flexibly fed continuous cutter typeis provided having improved flexible feeding means of the multiple haulage drum, type and in proved mec ianism for effecting drive of the haulage drums. It will further be noted that an improved reversible plural speed trans mission mechanism is provided for the haulage drums to effect drive of the drums in either direction at high or slow speeds thereby increasing the flexibility of operation of the machine. It will still further be noted that an improved coal mining machine of the flexibly fed continuous cutter room and pillar type is provided which is of an exceedingly simple, compact and rugged design especially adapted tomeet the severe de-. mands of service encountered in mines.

I may assume in practice it will be understood that this form has been shown for purposes -of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

WVhat I claim as new and desire to secure by Letters Patent is:

1. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by saidframe, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable feed operating members each adapted to cooperate with flexiblefeed- .ing means, and driving connections between I said motor and feed operating members including means for effecting drive of sald feed operatmg members at fast and slow speeds and in opposite directions at either cutter bar projecting from said frame, and

feeding means-for the machine including relatively rotatable feed operating members disposed at the end of the machine frame remote from the end thereof from which said cutter bar projects and each adapted i to cooperate With flexible feeding means, and driving connections between said motor and feed operating members including means for effecting drive of said feed oper ating members at fastand slow speeds and in opposite directions at either speed without reversing said motor.

3. In a mining machine, a machine frame slidable on its bottom on the mine floor, a

motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, feeding means for the machine including relatively rotatable feed operating members disposed on horizontal axes each adapted to cooperate with flexible feeding means, and driving connections between said motor and feed operating members including means for efiecting drive of said feed operating members at fast and slow speeds and in opposite directions at either speed without reversing said motor.

4. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, feeding means for the machine including relatively rotatable feed operating members coaXially arranged and each adapted to co operate with flexible feeding means, and driving connections between said motor and feed operating members including means for effecting drive of said feed operating members at fast and slow speeds and in 5. In a mining machine, a machine frame slidable on its bottom on the minefloor, a motor carried by said frame, lrerf cut-ting mechanism driven by said motor including a cutter bar projecting from said frame,

feeding means for the machine including. relatively rotatable feed operating members coaxially arranged and disposed on horizontal transverse axes and each adapted to cooperate with flexible feeding means, and.

driving connections between said motor and feed operating members including means for effecting drive of said feed operating,

members at fast and slow speeds and in 'opposite directions at either speed withoutreversing said motor.

6. In a mining machine, a machine frame, slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable feed operating members each adapted to cooperate with flexible feed ing means, and driving connections between said motor and said feed operating members including a reversible friction device for effecting drive of said feed operating mem-- bers at fast and slow speeds and in'opposite directions at either speed without reversing said motor.

7. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, lrerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable feed I operating members each adapted to cooperate with flexible feeding means, and driving connections between said motor and said feed operating members including a frictionally controlled plural speed transmission mechanism for effecting. drive of said feed operating members at fast and slow speeds and in opposite directions at either speed without reversing said motor.

8. In a. mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, lierf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including. relatively rotatable feed operating members each adapted to cooperate with flexible feeding means, and driving connections between said motor and said feed operating members including a frictionally controlled plural speed transmission mechanism and a reversible friction device for eflecting drive of said feed operating members at fast and slow speeds and in opposite directions at either speed without reversing said motor.

9. In a mining machine, a machine frame saidimotor. V v

slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and

feeding means for the machine including relatively rotatable haulage drums and cooperating haulage cables, and driving connections between said motor and said drums including means for effecting drum drive at fast and slow speeds and in opposite directions at-each speed without reversing said motor.

10. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said'frame, and feeding means for the machine including relatively rotatable haulage drums disposed on horizontal axes and cooperating haulage cables, and drivingconnections between said motor and said drums including means for efiecting drum drive at fast and slow speeds and in opposite directions at each speed without reversing said motor.

11. In a mining machine, a machine frame slidable on its bottom on the mine floor, a

motor carried by said frame, kerf cutting mechanism driven by'said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable haulage drums coaxially arranged and cooperating haulage cables, and driving connections between said motor and said drums including means for effecting drum drive atfast and slow speeds and in opposite directions at each speed without reversing said motor. r

12. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable haulage drums coaXially arranged and disposed on horizontal transverse axes and cooperating haulage cables, and driving connections between'said motor and said drums including means for effecting drum drive at fast and slow speeds and in op-' motor carriedyby said frame, kerf cutting mechanism driven by said motor including a cutter bar'projecting from said frame, and feeding means for the machine including relatively rotatable haulage drums and cooperating haulage cables, and driving connections between said motor and said drums including a reversible friction device for effecting drum drive at fastand slow speeds and in opposite directions at each speed Without reversing a machine'frame slidable on its bottom on the mine floor, a

14. In a minin machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable haulage drums and cooperating haulage cables, and driving connections between said motor and said drums includl ing a frictionally controlled plural speed transmission mechanism for effecting drum drive at fast and slow speeds and in opposite directions at each speed without reversing said motor.

15. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and

- feeding means for the machine including relatively rotatable haulage drums andcooperating haulage cables, and driving connections between said motor and said drums including a reversible friction device and frictionally controlled plural speed transmission mechanism for effecting drum drive at fast and slow speeds and in opposite directions at each speed without reversing said motor.

16. In a mining machine, a machine frame 1 slidable on its bottom on the mine floor, a

motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including 1 relatively rotatable feed operating members each adapted to cooperate with flexible feeding means, and driving connections between said motor and said feed operating members including separate fast and slow speed worm gear trains for effecting drum drive of said feed operating members at fast and slow speeds and in opposite directions at either speed without reversing said motor.

17. In a mining machine, a machine frame "i i slidable on its bottom on the mine floor, a

motor carried by said frame, kerf cutting mechanism driven by said motor including a. cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable feed operating members each adapted to cooperate with flexible feeding means, and driving connections between said motor and said feed operating members including separate frictionally controlled ;fast and slow speed worm gear trains for relatively rotatable feed operating members each adapted to cooperate with flexible feeding means, and driving connections between said motor and said feed operating members including separate fast and slow speed worm gear trains and a reversible friction device for effecting drum drive of said feed operating members at fast and slow speeds and in opposite directions at either speed without reversing said motor.

19. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable feed operating members each adapted to cooperate with flexible feeding means, and driving connections between said motor and said feed operating members including separate frictionally controlled fast and slow speed worm gear trains and a reversible friction device for effecting drum drive of said feed operating membersat fast and slow speeds and in opposite directions at either speed without reversing said motor.

20. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter bar projecting from said frame, and feeding means for the machine including relatively rotatable haulage drums and cooperating haulage cables, and driving connections between said motor and said drums including separate frictionally controlled fast and slow speed worm gear trains and a reversible friction device for effecting drum drive at fast and slow speeds and in opposite directions at each speed without reversing said motor.

21. I11 a mining machine, a machine frame slidable on its bottom on the mine floor, kerf cutting mechanism carried by said frame including an elongated kerf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and mechanism driven by said motor for driving said members at either a relatively fast speed or a relatively slow speed and including means for effecting rotation of one of said mem bers in opposite directions at either speed without reversing said motor.

22. In a mining machine, a machine frame slidable on its bottom on the mine floor, kerf cutting mechanism carried by said frame including an elongated kerf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and mechanism driven by said motor for driving said members at either a relatively fast or a relatively low speed and including means for e'fl'ectin rotation of either or both of said members in opposite directions at either speed without reversing said motor.

23. In a mining machine, a machine frame slidable on its bottom on the mine floor, kerf cutting mechanism carried bysaid frame ineluding an elongated lrerf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and mechanism driven by said motor for driving said members in a direction. to draw in their respective flexible feeding means at either a relatively slow or a relatively fast speed and including means for effecting rotation of one of said members in opposite directions at either speed with out reversing said motor.

2%. in a mining machlne, a machine frame slidahle on its bottom on the mine floor, lrerf cutting mechanism carried by said frame intively fast or a relatively slow speed and including means for effecting rotation of either or both of said members in opposite directions at either speed without reversing said motor. 7

25. In a mining machine, a machine frame slidable on its bottom on the mine floor,kerf cutting mechanism carried by said frame including an elongated kerf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and motor driven mechanism for driving said members simultaneously or separately in a direction to draw in their respective flexible feeding means at either a relatively high speed or a relatively low speed and including means for effecting rotation of said members n opposite direc- .-tions at either speed without reversing said motor. I

26. In a mining machine, a machine frame slidable on its bottom on the mine floor, kerf cutting mechanism carried by said frame ineluding an elongated kerf cutter projecting,

from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating menibers each adapted to cooperate directly with flexible feeding means, and motor driven mechanism for driving said members simultaneously or separately in a direction to draw in their respective flexible feeding means 7 at either a relatively high speed or a relatively low'speed or to permit said members to rotate in a direction to pay out their respective flexible feeding means under various degrees of frictional resistance and including means for effecting rotation of said members in opposite directions at either speed without reversing said motor. 4

27. In a mining machine, a machine frame slidable on its bottom on the mine, floor, kerf cutting mechanism carried by said frame including an elongated lterf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexi le feeding means, and motor driven mechanism for driving said members simultaneously or separately in a direction to draw in their respective flexible feeding means at either a relatively high speed or a relatively low speed or to permit said members to rotate in a direction to pay out their respective flexible feeding means under Va riou's degrees of frictional resistance or without such resistance and including means for effecting rotation of said members in opposite directions at either speed without reversing said motor.

28. In a mining machine, a machine frame slidable on its bottom on the mine floor. kerf' cutting mechanism carried by said frame including an elongated kerf cutter projecting from said frame. a motor, and, feeding means for the machine driven by said motor including relatively rotatable feed operating member each adapted to cooperate directly with flexible feeding means.

and mechanism driven by said motor for driving said members in a direction to draw in their respective flexible feeding means including power transmission connections for driving said members including a plurality of friction clutches selectively operable to reverse the direction of rotation of said mem: bers, supplemental clutches for changing the rate of rotation of said members located said power transmission connections at the opposite side of said first mentioned clutches from the motor, and controlling mechanism including mechanism for selectively actuating said different clutches.

29. In a mining machine, a machine frame slidable on its bottom on the mine floor. kerf cutting mechanism carried by said frame including an elongated kerf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between said motor andsaid feed operating members operative to effect operation of said members by said motor at a plurality of speeds and in opposite directions at each of said speeds having speed change gearing including a plurality of clutches and also having a plurality of selectively operable friction clutches between said first mentioned clutches and said motor.

30. In a mining machine, a machine frame .slidable on its bottom on the mine floor, kerf cutting mechanism carried by said frame including an elongated kerf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor in- A cluding relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between the motor and said'feed operating members operative to effect oper ation of said members by said motor at a plurality of speeds and in opposite directions at each of said speeds including speed changing gearing including a plurality of friction clutches operative when engaged to change the speed of rotation of said feed operating members, and a plurality of selectively operable friction clutches between said first mentioned clutches and said motor.

31. In a mining machine, a machine frame slidable on its bottom on the mine floor, kerf cutting mechanism carried by said frame including an elongated lzerf cutter projecting from said frame, a motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between said motor and said members operative to effect operation of said members by said motor at a plurality of speeds and in opposite directions at each of said speeds including speed changing gearing including a plurality of clutches between the motor and said feed operating members, and a plurality of friction clutches selectively operable to reverse the direction of rotation of said feed operating members and arranged between said first mentioned clutches and said motor.

In 'a mining machine, a machine frame slid able on its bottom on the mine floor, kerf cutting mechan sm carried by said frame including an elongated lrerf cutter projecting from said frame, motor, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between the motor and said feed operat ing members operative to effect operation of said members by said motor at a plurality of speeds and in opposite directions at each of said speeds incluning speed changing gearing including a plurality of friction clutches operative when engaged to change the speed of rotation of said feed operating members,

and a plurality of friction clutches selectively operable to reverse the direction of rotation of said feed operating members and arranged between said first mentioned clutches and said motor.

83. In a mining machine having a frame provided with projecting cutting mechanism and slidable on a mine bottom, a driving motor operatively connected to the cutting mechanism, machine feeding and guiding mechanism including a plurality of flexible feeding portions each having a free extremity connectible to a fixed point during feeding of the machine and extending laterally from opposite ends of the frame, and means driven by said motor for winding in either of said portions including cooperating relatively rotatable feed operating members and power transmission connections for driving said members including a plurality of friction clutches selectively operable to reverse the direction of feed, supplemental clutches for changing the rate of feed located in said powor transmission connections at the opposite side of said first mentioned clutches from the motor, and controlling mechanism including mechanism for selectively actuating said different clutches.

A mining machine slidable on a mine bottom comprising a frame, cutting mechanism thereon including a projecting cutter bar disposed longitudinally of said frame and rigidly connected thereto throughout the cutting operation, and a circulating cutter chain on said bar, flexible feeding means and guiding means for said feeding means about which said flexible feeding means may be directed to enable lateral cutting in a face in either direction providing advance and receding portions during lateral cutting in one direction extending laterally in opposite direction from the opposite ends of said frame and having provision whereby said portions may be reversely disposed respectively as receding and advancing portions during lateral cutting in the opposite direction, a motor operatively connected with said cutter chain, and driving connections between said motor and said flexible feeding means including relatively rotatable feed operating members operatively engaging the latter, and driving connections between the motor and said feed operating members operative to effect operation of said members by said motor at a plurality of speeds and in opposite directions at each of said speeds having speed change gearing including a plurality of clutches and also having a plurality of selectively operable friction clutches between said first mentioned clutches and said motor.

35. A mining machine slidable on a mine bottom comprising a frame, cutting mechanism thereon including a projecting cutter bar disposed longitudinally of said frame and rigidly connected thereto throughout the cutlull ting operations, and a circulating cutter chain on said bar, flexible feeding means and guid: ing means for said feeding means about which said flexible feeding means maybe directed to enable a lateral cut in a face in either direction providing advance and receding portions during lateral cutting'in one direction'extending laterally in" opposite directions from the opposite ends of said frame and having provision wherebysaid portions may be reversely disposed respectively as receding and advancing portions during lateral cutting .in the-opposite direction, a motor operatively connected with said cutter chain, and driving connections between said motor and said flexible feeding means including relatively rotatable feed operating members operatively engaging the flexible feeding means, and driving connections between the motor and said feed operating members operative to effect operation of'said members by said motor at a plurality of speeds and in opposite directions at each of said speeds including speed changing gearing including a plurality of clutches operative when engaged to change the speed of rotationof the feed operating members and a plurality of selectively operable friction clutches between said first mentioned clutches and said motor.

86. A mining machine slidable on a mine bottom comprising a frame, cutting mechanism thereon including a projecting cutter bar disposed longitudinally of said frame and rigidly connected thereto throughout the cutting operation, and a circulating cutter chain on said bar, flexible feeding means and guiding means for said feeding means about which said flexible feeding means may be directed, in order to enable a lateral cut in a face in either direction, to provide advance vand receding portions during lateral cutting in one direction extending laterally in opposite directions from the opposite ends of said frame and having provisions whereby said portions may be reversely disposed respectively as receding and advancing portions during lateral cuttingin the opposite direction, a motor operatively connected with said cutter chain, and drivingconnections between said motor and-said flexible feeding means including relatively rotatable feed operating members operatively engaging the latter, and driving connections between the motor and said feed operating members operative to effect operation of said members by said motor at a plurality of speeds and in opposite directions at each of said-speeds including speed changing gearing including a plurality of clutches between the motor and feed operating membersand a plurality of friction clutches selectively operable to reverse the direction of feed and arranged between said first mentioned clutches and said motor.

87. A miningmachine slidable on a mine bottom comprising a frame, cutting mecha nism thereon including a projecting cutter bar disposed longitudinally of said frame and rigidly connected thereto throughout the cutting operations, and a circulating cutter chain on said'bar, flexible feeding means and guiding means'for said feeding means about which said flexible feeding'means may be directed, in order to enable a lateral cut in a face in either direction, to provide advance and receding portions during lateral cutting in one directionvextending laterally in op;- posite directions from the opposite ends of said frame and having provision wherebyflexible feeding means, and driving connections between the motor and said feed operating members operative to effect operation of said members by said motor ata pluralit of speeds and in opposite directions at eac of saidspeeds including speed changing gearing including a plurality of friction clutches operative when engaged to change the speed of rotationof the feed operating members and a plurality of friction clutches selectively operable to reverse the direction of feed and arranged between said first mentioned clutches and said motor.

' 38. Ina mininginacliine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism drivenby said motor including acutter chaincarrying cutter bar projecting from said frame, and a driving element for said cutter chain, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between said motor and said members including. a gear coaxial with said cutter chain driving element, gears meshing directly with said gear, worms driven by said last mentioned gears respectively, and;worm wheels meshing with said worms and driven thereby at relatively different predetermined speeds.

39. In a mining machine,-a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a-cutter chain carrying cutter bar projecting from said frame, and a driving element for said cutter chain, and feeding means for the machine driven by said motorincludingrelatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections be tween said motor and said members includsing agear coaxial with said cutter chain driving element, gears meshing directly with said gear, worms driven by said last mentioned gears "respectively and rotating about parallel vertical axes, and worm wheels meshing with said worms anddriven thereby atrelatively different predetermined speeds. 40. In a mining machine,-a machine frame slidableon its. bottom von. the mine floor, a motor carried by said frame, kerf cutting .mechanism driven by said motor including acutterchain carrying cutter bar projecting irrom saidframe, and a driving element for said cutter chain, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with. flexible feeding means, and driving connections between said motor and said members including a-- gear coaxial with said cutter chain driving element, gears meshing with said gear, worms driven by said last mentioned gears respectively, worm wheels meshing with said worms, a transverse shaft coaxial with said worm wheels and driven thereby at relatively different predetermined speeds, and driving connections between each of said members and said shaft.

' 41-. Ina mining machine, a'machine frame slidable on its bottom on the mine floor, a motor carried by said frame, kerf cutting mechanism driven by said motor including a cutter chain carrying cutter bar projecting from said frame, and a driving element for said cutter chain, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between said motor and said members including a gear coaxial with said cutter chain driving element, gears meshing with said gear, worms driven by said last mentioned gears respectively, worm wheels meshing with said worms, a transverse shaft coaxial with said worm wheels, and clutches for selectively connecting said worm wheels to said shaft.

42. In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, and feeding means for the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between said motor and said members including a spur pinion rotatable about a vertical axis, spur gears meshing directly with said spur pinion, worms driven by said spur gears respectively, and worm wheels meshing with said worms and driven thereby at relatively different predet rmined speeds.

43, In a mining machine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, and feeding motor carried by said frame, and feeding:

means for the machine driven byv said motor including relatively rotatable feed operating members each adapted to cooperate directly with flexible feeding means, and driving connections between said motor and sa d memhers including a spur pinion rotatable about a vertical axis, spur gears meshing with said spur pinion, worms driven by saidspur gears respectively, worm wheels meshing with said worms, a transverse shaft coaxial with said worm wheels and driven thereby at relatively different predetermined speeds, and driving connections between said shaft and said feed operating members. v

i 45. In mining machine, a machine frame slidable on its bottom on the mine floor, a movtor carried bv said frame, and feed ng means for the machine driven by said motor including relatively rotatable feed operating mcm-- bers each adapted to cooperate directly with flexible feeding means, and driving connections between said motor and said members including a spur p nion rotatable about vertical axis, spur gears meshing with said spur pinion, worms driven by said spur respectively and rotating about parallel er-- tical' axes, worm wheels meshing with said worms, a transverse shaft coaxial with said worm wheels and driven thereby at relatively different predetermined. speeds. and driving connections between said shaft and said feed operating members.

46. In a mining machine, a machine frame slidable on its bottom on the mine floor. a motor carried by said frame. and feeding means for'the machine driven by said motor including relatively rotatable feed operating members each adapted to cooperate directly with. flexible feeding means, and driving connections between said motor and said members including a spur pinion rotatable about a vert cal axis, spur gears meshing with said spur pinion, worms driven by said spur gears respectively, worm wheels meshing with said worms, a transverse shaft coaxial with said 1;

worm wheels, and clutches for selectively connecting said worm wheels to saidshaft.

47. In aminingmachine, a machine frame slidable on its bottom on the mine floor, a motor carried by said frame, and feeding means for the machine driven by said motor including relatively rotatable feed operating members. each adapted to cooperate directly with flexible feeding means, and driving con-- nections between said motor and said members including a spur pinion rotatable about a vertical axisfspur gears meshing with said spur pinion, worms driven by spur gears respectively: and'rotating about parallel ver-1 tical axes, worm wheels meshing with said worms, a transverse shaft coaxial with said worm wheels, and clutches for selectively connecting saidworm wheels to said shaft.

- 48. In a mining machine. feeding mecha-' 1 nism, relatively rotatable feeding members each adapted to cooperate directly with flexible feeding means, and motor operated driving means for said members includinga motor driven element, a'fast and slow predetermined speed changespeed mechanism, andv a reversing device in the drive between said motor driven element and said change speed mechanism whereby said members may be rotated in either of opposite directions and at different speeds while said motor driven. element rotates continuously. in a single direction. a f

49. In a mining machine,la motor, kerf cutting mechanism driven by said: motor in cluding a. cutter chain carrying cutterbar and a driving sprocket for said cutter chain, a driving element coaxial with the rotatable with said sprocket, and feeding means for the machine including relatively rotatable feeding members each adapted to cooperate directly with flexible feeding means, and driving connections between said driving element and said members including a selective change speed device for effecting drive of said members at different predetermined 7 speeds including separate relatively high and low speed gear trains branching from saiddriving element and selectively operable tov effect drive of said members.

50. In a mining machine, a motor, kerf cutting mechanism driven by said motor including a cutter chain carrying cutterfbar and a driving sprocket for said cutter chain, a. driving element coaxial with and rotatable with said sprocket, and feeding means i for the machine including relatively rotatable feeding members each adapted to cooperate directly with flexible feeding means, and driving connections be- 1 tween said driving element and said members including a reversing device whereby said members may be driven in either of opposite directions while said driving element rotates continuously in a single direction.

51. In a mining machine, a motor, kerf cutting mechanism driven by said motor including a cutter chain carrying cutter bar and a driving element for said cutter chain, and feeding means for the machine including relatively rotatable feeding members each adapted to-cooperate directly with flexible feeding means, and driving connections between said cutter chain driving element and said members including'a change speed device for effecting drive at a plurality of,

speedsand'a reversing device whereby said members maybe driven in either of opposite directions at either speed while said cutter'chain driving element rotates continuouslyin a single direction.

' 52. In a mining machine, a motor, kerf cutting mechanis'ni driven by said motor including a kerf cutter, and feeding means for the-machine including relatively rotatable feeding members each adapted to cooperate directly with flexible feeding means, and driving connections between said motor and said feeding-members for driving the latter in either of opposite directions at similar speeds while said kerf cutter is driven and the motor operates both continuously in the same direction.

53. In a mining machine, a motor, kerf cutting mechanism driven by said motor includ ing a kerfcutter, and feeding means for the machine including relatively rotatable feeding members each adapt-ed to cooperate directly with flexible feeding means, and plural speed driving connections between said motor and said feeding members for driving the latter in either of opposite directions at either speed while said kerf cutter is driven and the motor operates both continuously in the same direction. v

54. In a mining machine, a motor, cutting mechanism driven thereby including an elongatedlkerf cutter, and feeding means driven bysaid motor-including relatively rotatable feed operating and controlling members rotating on horizontal axes and each adapted to cooperate with flexible feeding means and plural speed mechanism for independently driving said members at either a relatively low speed or a relatively high speed and selectively in opposite directions at either speed while said motor runscOntinuously in one direction. a.

55. ,In a mining machine, a motor, cutting mechanism driven thereby including an elongated kerf cutter, and feeding means driven by said motor including relatively rotatable relatively rotatable teed operating and corn trolling members each adapted to] cooperate with flexible feeding means and plural speed mechanism: for independently driving said members at either-a relatively low speed or a relatively high: speed and; selectively inoppo-- site directionsat either speedwhile said motor runs continuously in one direction.

5-7; a mining machine, a motor, cutting mechanism driven thereby including an elongated lrerf cutter, and feeding means driven by said including coaxiallyarranged relatively rotatable feed operating and con trolling members rotating on horizontal axes and each adapted to cooperate with flexible feeding means, and plural speed mechanism for independently driving said members at either a relatively low speed o-ra relatively l iighspeed and selectively in opposite d i reotio-ns at either speed while saiid motor runs continuously in one direction.

58. In a mining machine feed ng mecha-' nism, amotor, relatively rotatable feed members each adapted to cooperate directlywith flexible feeding means, and driving'connections between said motor and said members; for rotating said members either separately or simultaneously at relatively high speed orat relatively low speed and at the sameangel l ar rates and including reversing means for effecting; rotation of said members in either of opposite; directions at either speed withoutreversing said motor.

59. In a mining machine'feeding mechanism, a motor, relatively rotatable feeding members arranged a t san-d driven from the same end of said motor and each adapted to cooperate directly with flexible feeding means, and plural speed drivingconnections between said motor and sai d membersfor ro- Y tatingsaid members inla direction to dfawi'n their respective flexible feeding means at ferent speeds and includingreversing means for effecting rotation of one of said members in eitherof opposite directions at the same angular speeds ineither direction without re.- versing said motor. 7 v

60. In a mining machine feeding mechanism, a motor, relatively rotatable feeding members each adapted to cooperate directly with flexible feeding-means, and nlu-ralspeed driving connections between said, motor and said members for rotating said members in a direction to d'rawi'n their respective flexible feeding means at different speeds and including reversing means for eiifecting rota; tion of said members in either of opposite directions at the same angular speeds, in either direction without reversing said motor;

61. In a mining machine feeding mecba nism, a motor, relatively rotatable feeding members each adapted to cooperate directly with flexible feedingmeans, and driving connectio-ns between said motor and said bers for driving said: members at a relatively magma tions: at. either speed without: reversing said motor. I

6& In a machine feeding mechanism, motor, relatively rotatable feedingmembers each adapted to'cooperate; directly with flexible feeding means, and driving connections: between said members for rotating saidimembers separately or simultaneonslyat relatively high speed or at; relatively low speed andincluding' reversing means for effecting rotation of said members in either ofopposite directions at either speed without reversing'said motor.

In testimony whereofl affix my signature.

Monmsn HOLMES.

izr

CERTIFICATE OF CORRECTION.

Patent No. 1,875,334. September 6, 1932.

MORRIS P. HOLMES.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 63, for "slidably" read suitabiy; and page 11, line 32, claim 49, for "the" read and; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 30th day of October, A. D. 1934.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

